Form 4 for ALMR Alamar Biosciences, Inc.
Accepted 2026-04-20 20:34:44 ET · period of report 2026-04-16 · accession 0002126944-26-000004 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-04-20 20:34 | 2026-04-20 | ALMR | Chen Shiping | COO, Dir | C - Cnv Deriv | — | +393.4K | 722.9K | +119% | — |
| DM | 2026-04-20 20:34 | 2026-04-20 | ALMR | Chen Shiping | COO, Dir | J - Other | $0.00 | 0 | 722.9K | New | $0 |
| D | 2026-04-20 20:34 | 2026-04-20 | ALMR | Chen Shiping | COO, Dir | A - Grant | $0.00 | +37.2K | 760.1K | +5% | $0 |
| D | 2026-04-20 20:34 | 2026-04-16 | ALMR | Chen Shiping | COO, Dir | A - Grant | $0.00 | +163.4K | 163.4K | New | $0 |
| DM | 2026-04-20 20:34 | 2026-04-20 | ALMR | Chen Shiping | COO, Dir | C - Cnv Deriv | $0.00 | -496.7K | 0 | -100% | $0 |
| DM | 2026-04-20 20:34 | 2026-04-20 | ALMR | Chen Shiping | COO, Dir | J - Other | $0.00 | 0 | 12.2K | New | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Class B Common Stock | 2026-04-20 | C | A | 320,511 | — | 650,032 | D | — | — | (F1) The Class A Common Stock and Founders Preferred Stock are convertible into shares of Class B Common Stock on a 1:1 basis and have no expiration date. The Class A Common Stock and Founders Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the initial public offering of the Issuer's Common Stock (the "IPO"). (F1) The Class A Common Stock and Founders Preferred Stock are convertible into shares of Class B Common Stock on a 1:1 basis and have no expiration date. The Class A Common Stock and Founders Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the initial public offering of the Issuer's Common Stock (the "IPO"). |
| 2 | Common | Class B Common Stock | 2026-04-20 | C | A | 72,853 | — | 722,885 | D | — | — | (F2) The Series A-1 Preferred Stock is convertible into shares of Class B Common Stock on a 1:2.418 basis and has no expiration date. The Series A-1 Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the IPO. (F2) The Series A-1 Preferred Stock is convertible into shares of Class B Common Stock on a 1:2.418 basis and has no expiration date. The Series A-1 Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the IPO. |
| 3 | Common | Class B Common Stock | 2026-04-20 | J | D | 722,885 | — | 0 | D | — | — | (F3) Each share of Class B Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO. (F3) Each share of Class B Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO. |
| 4 | Common | Common Stock | 2026-04-20 | J | A | 722,885 | $0.00 | 722,885 | D | — | — | (F3) Each share of Class B Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO. |
| 5 | Common | Common Stock | 2026-04-20 | A | A | 37,220 | $0.00 | 760,105 | D | — | — | (F4) Represents the grant of restricted stock units ("RSUs"). The RSUs vest monthly from the date of grant, subject to the reporting person's continuous service as of each such vesting date. |
| 6 | Derivative | Stock Option (Right to Buy) | 2026-04-16 | A | A | 163,358 | $0.00 | 163,358 | D | $17.00 · — to 2036-04-15 | 163,358 Common Stock | (F5) Twenty-five percent of the shares subject to the option vest on April 16, 2027, and 1/48th of the shares vest monthly thereafter, subject to the reporting person's continuous service as of each such vesting date. |
| 7 | Derivative | Class A Common Stock | 2026-04-20 | C | D | 247,311 | $0.00 | 0 | D | — · — to — | 247,311 Class B Common Stock | (F1) The Class A Common Stock and Founders Preferred Stock are convertible into shares of Class B Common Stock on a 1:1 basis and have no expiration date. The Class A Common Stock and Founders Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the initial public offering of the Issuer's Common Stock (the "IPO"). (F1) The Class A Common Stock and Founders Preferred Stock are convertible into shares of Class B Common Stock on a 1:1 basis and have no expiration date. The Class A Common Stock and Founders Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the initial public offering of the Issuer's Common Stock (the "IPO"). (F1) The Class A Common Stock and Founders Preferred Stock are convertible into shares of Class B Common Stock on a 1:1 basis and have no expiration date. The Class A Common Stock and Founders Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the initial public offering of the Issuer's Common Stock (the "IPO"). |
| 8 | Derivative | Founders Preferred Stock | 2026-04-20 | C | D | 73,200 | $0.00 | 0 | D | — · — to — | 73,200 Class B Common Stock | (F1) The Class A Common Stock and Founders Preferred Stock are convertible into shares of Class B Common Stock on a 1:1 basis and have no expiration date. The Class A Common Stock and Founders Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the initial public offering of the Issuer's Common Stock (the "IPO"). (F1) The Class A Common Stock and Founders Preferred Stock are convertible into shares of Class B Common Stock on a 1:1 basis and have no expiration date. The Class A Common Stock and Founders Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the initial public offering of the Issuer's Common Stock (the "IPO"). (F1) The Class A Common Stock and Founders Preferred Stock are convertible into shares of Class B Common Stock on a 1:1 basis and have no expiration date. The Class A Common Stock and Founders Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the initial public offering of the Issuer's Common Stock (the "IPO"). |
| 9 | Derivative | Series A-1 Preferred Stock | 2026-04-20 | C | D | 176,160 | $0.00 | 0 | D | — · — to — | 72,853 Class B Common Stock | (F2) The Series A-1 Preferred Stock is convertible into shares of Class B Common Stock on a 1:2.418 basis and has no expiration date. The Series A-1 Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the IPO. (F2) The Series A-1 Preferred Stock is convertible into shares of Class B Common Stock on a 1:2.418 basis and has no expiration date. The Series A-1 Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the IPO. (F2) The Series A-1 Preferred Stock is convertible into shares of Class B Common Stock on a 1:2.418 basis and has no expiration date. The Series A-1 Preferred Stock automatically converted into shares of Class B Common Stock immediately prior to the completion of the IPO. |
| 10 | Derivative | Stock Option (Right to Buy) | 2026-04-20 | J | D | 300,883 | $0.00 | 0 | D | $3.34 · — to 2035-01-15 | 300,883 Class B Common Stock | (F3) Each share of Class B Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO. (F6) The shares subject to the option vest in equal monthly installments over 48 months measured from January 16, 2025, subject to the reporting person's continuous service as of each such vesting date. |
| 11 | Derivative | Stock Option (Right to Buy) | 2026-04-20 | J | A | 300,883 | $0.00 | 300,883 | D | $3.34 · — to 2035-01-15 | 300,883 Common Stock | (F3) Each share of Class B Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO. (F6) The shares subject to the option vest in equal monthly installments over 48 months measured from January 16, 2025, subject to the reporting person's continuous service as of each such vesting date. |
| 12 | Derivative | Stock Option (Right to Buy) | 2026-04-20 | J | D | 12,190 | $0.00 | 0 | D | $7.60 · — to 2036-01-14 | 12,190 Class B Common Stock | (F3) Each share of Class B Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO. (F7) The shares subject to the option vest in equal monthly installments over 48 months measured from January 1, 2026, subject to the reporting person's continuous service as of each such vesting date. |
| 13 | Derivative | Stock Option (Right to Buy) | 2026-04-20 | J | A | 12,190 | $0.00 | 12,190 | D | $7.60 · — to 2036-01-14 | 12,190 Common Stock | (F3) Each share of Class B Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO. (F7) The shares subject to the option vest in equal monthly installments over 48 months measured from January 1, 2026, subject to the reporting person's continuous service as of each such vesting date. |